Survey of Local and Global Optical Flow with Coarse to Fine Method

Optical flow as an image processing technique finds its applications in many areas of computer vision. A lot of research has been carried out in order to improve optical flow detection techniques, but this field is not perfect even as of today .Many methods have been proposed to solve the optical flow problem however, instabilities at the boundaries of moving objects are still challenges. There are many methods to extract optical flow, yet there is no platform that brings out comparison on the performance of these methods. In this paper, the two major optical flow algorithms are stated. Also I propose two methods of coarse to fine estimation to improve results of basic approach.